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Remove planner's private fields from Query struct, and put them into

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a new PlannerInfo struct, which is passed around instead of the bare
Query in all the planning code.  This commit is essentially just a
code-beautification exercise, but it does open the door to making
larger changes to the planner data structures without having to muck
with the widely-known Query struct.
This commit is contained in:
Tom Lane
2005-06-05 22:32:58 +00:00
parent 22dbd54047
commit 9ab4d98168
51 changed files with 852 additions and 707 deletions
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14
src/include/utils/selfuncs.h
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@@ -8,7 +8,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/selfuncs.h,v 1.22 2005/03/06 22:15:05 tgl Exp $
* $PostgreSQL: pgsql/src/include/utils/selfuncs.h,v 1.23 2005/06/05 22:32:58 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -16,7 +16,7 @@
#define SELFUNCS_H
#include "fmgr.h"
#include "nodes/parsenodes.h"
#include "nodes/relation.h"
/*
@@ -108,19 +108,19 @@ extern Datum icregexnejoinsel(PG_FUNCTION_ARGS);
extern Datum nlikejoinsel(PG_FUNCTION_ARGS);
extern Datum icnlikejoinsel(PG_FUNCTION_ARGS);
extern Selectivity booltestsel(Query *root, BoolTestType booltesttype,
extern Selectivity booltestsel(PlannerInfo *root, BoolTestType booltesttype,
Node *arg, int varRelid, JoinType jointype);
extern Selectivity nulltestsel(Query *root, NullTestType nulltesttype,
extern Selectivity nulltestsel(PlannerInfo *root, NullTestType nulltesttype,
Node *arg, int varRelid);
extern void mergejoinscansel(Query *root, Node *clause,
extern void mergejoinscansel(PlannerInfo *root, Node *clause,
Selectivity *leftscan,
Selectivity *rightscan);
extern double estimate_num_groups(Query *root, List *groupExprs,
extern double estimate_num_groups(PlannerInfo *root, List *groupExprs,
double input_rows);
extern Selectivity estimate_hash_bucketsize(Query *root, Node *hashkey,
extern Selectivity estimate_hash_bucketsize(PlannerInfo *root, Node *hashkey,
double nbuckets);
extern Datum btcostestimate(PG_FUNCTION_ARGS);